William burnett of new



(No Model.)

W. BURNETT.

RAILWAY GAR HEATER. No. 398,816. Patented Mar. 5, 1889.

W/T/VESSES: INVENTOR,

N. PETERS. Fhcln-Lfihngmphcn Wnshinglun. 0.0.

UNTTET) STATES PATENT @EEICE.

WILLIAM liUltNiil'Pl 01 NEW YORK, N. Y., ASSlHNUlidli) JOHN B. GRAY, (ii? SAME IILAPE.

RAI LWAY-OAR H EATER.

SPECIFICATION forming part of Letters Patent No. 398,816, dated March 5, 1889.

Application filed May 2, 1887. Serial No. 236,814. (No model.)

To aZZ whom it nmy concern:

Be it known that I, WILLIAM BURNETT, a citizen of the United States, residing at New York, in the county and State of New York,

'have invented certain new and useful Iml l l l to every part of the car the heat transmitted the said vertical pipes being connected tofrom the generator.

The object of my invention is to provide a heatin device more manageable and elleciive 5 than any heretofore devised, and entirely free from danger of fire or explosion.

My invention of a railway-car heater, for which my application for Letters Patent was filed March 20, 1887, Serial No. 232,820, consists (as therein stated) in providing within each car separately an arrangement of heating-pipes which presents a contil'iuous and unbroken circuit, through which air, steam, or water, or the like, is impelled by a sieanrjet, which not only causes the medium selected to circulate rapidly through the heating-popes, but by its condensation imparts its heat to the fluid body impelled by it, and indirectly to the inteiiorsurface of the pipes through which it is made to circulate.

My said invention crmsisls, l'urlln-r, in the arrangement of certain devices to operate in conjunction wilh the hcatingpipcs, the same current of intermingled air and steam atonce having reference to the (unployment oi, the several hcat-conveyi ng 111 cd in ms en u m erat ed, or their equivalents.

My present invention consists of an improved arrangement of thc heating-pipes, by 5 means oi which the sicam jet is made more eiiectivc through the introduction of a new operative force which may be made to serve in conjunction with the steam-jet, or sepa ratcly, as may be desired, which will be hereinaftm'fully explained. The steam employed .i s obtained from the locomoti vc-boiler through mains situated under the several cars, and connected together by suitable hose. From the main so provided a small branch steampipe enters each car and connects with the heatin device.

Referring to the drawings, Figurel .isa side v side, and near the iioor.

sectional elevation of the heating device, en tire and Fig. 2 is a sectional elevation of a modified form of the steam-jet pipe enlarged.

The construction of this heating device is as follows: The horizontal pipes A and liexlcnd nearly the entire length of the car, and may be placed against the side wall of the car on either The outer ends of these pipes are connected 1 gethcr by a hall? turn elbow, The vertical. pipes D and E 1 are connected to the pipes A and 1-3, respectively, by the quarter-turn elbows l and t1,

gether at their lower ends by ihe half-turn elbow H, the pipes D and E and elbow H forming an inverted siphon having the legs D and E. The plane T T may be taken to represent the ilatform upon which the device is mounted for attachment to the floor of the car.

R is a relief-valve with dischargepipe S to. limit the pressure within the instrument.

Qis a gage to indicate thcinicrnal pressure.

I is a steam-jetpipe, the top end of which is situated centrally within the mouth of pipe D. To this jet-pipe the steam is supplied from the steam-main under the car, through pipes J and L and half-turn elbow M, and its flow regulated by valve K.

P is an air-cock, N a waste-water cock, and 0 an air and waste-water cock.

The operation is as follows: The circuitpipes containing atmosplmric air only, the

steam-jet is let on by opening valve K, and :1

begins to circulate through the heating-pipes, as from the upper end of the jet-pipe through I) F A C B G E H to the point of beginning, and so on, making the circuit of the pipes continuous. W aier accruing from steam con densation may be permittedgto escape as a drip from waste-water cock 0, or may be made to pass through a steam-trap. lYhen steam alone is employed as a circulating-medium, the manipulation is the same as for air heating-pipes andkept at a suitable temperature by the impelliu g steam-j et; but the temperature of the pipes may be modified to any degree by closing the steam-induction Valve K more or less, as may be found necessary.

The most important part of my present invention consists in arranging a portion of the pipe-circuit in the form of an inverted siphon,

as shown at D E H, by which meansl am en- I abled to employ not only the mechanical force of the steam-jet in producing and maintaining the water circulation, but to take advantage of the presence in the column of steam supplied by the jet, which reduces the weight 1' of the column and assists in the production of a rapid circulation of the water through the heating-pipes by reason of the prepondew ance of the opposed solid water column. in pipe E. \Vhile the operation of this auxiliary force is necessarily involved in the use of 1 a steam-jet arranged substantially asherein described, its greatest efficacy is developed when employed separatelyfrom the steam-jet. l Itherefore sometimes employ a jet-pipe constructed like that shown at Fig. 2, in which the central vertical jet-opening is dispensed with, and a number of small lateral openings, 6, substituted, through which the steam is permitted to flow out and commingle with the water of column D. The steam is introduced at the lower end of the pipe, and, passing upward by its ascensive power, lightens the water col umn in pipe D, so that the opposed water column in pipe E will have preponderance, and thereby cause continual displacement of the lighter column.

whatI claim, and desire to secure by Letters Patent, isr 1. The combination with a radiator-pipe having a depending loop, the tWo torming a 3 complete circuit of pipes for a heating inedium, of a j et-pipe extendingwithin the loop, and a suitably-governed Valve on the circuit, substantially as described. I '2. The combination, with a radiator-pipe having a depending loop, the two forming a 1 complete circuit of pipes for aheating inedium, of a j et-pipe extending within the l -oop 1 having a closed end and side perforations, and a suitably-governed Valve on the circuit, substantially as described. WILLIAM BURNETT.

Xlitnesses:

CHAS. C. GInL, HERMAN GUsToW.

Having thus fully described my invention, 

